mirror of https://github.com/neutrinolabs/xrdp
add os_calls.c
This commit is contained in:
jsorg71
parent
ce08ad0486
commit
1b3ed28352
|
|
@ -0,0 +1,361 @@
|
|||
/*
|
||||
This program is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program; if not, write to the Free Software
|
||||
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
|
||||
Copyright (C) Jay Sorg 2004
|
||||
|
||||
generic operating system calls
|
||||
|
||||
*/
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <errno.h>
|
||||
#include <pthread.h>
|
||||
#include <stdarg.h>
|
||||
#include <stdio.h>
|
||||
#include <fcntl.h>
|
||||
#include <netinet/in.h>
|
||||
#include <sys/types.h>
|
||||
#include <sys/socket.h>
|
||||
#include <openssl/rc4.h>
|
||||
#include <openssl/md5.h>
|
||||
#include <openssl/sha.h>
|
||||
#include <openssl/bn.h>
|
||||
|
||||
static pthread_mutex_t g_term_mutex = PTHREAD_MUTEX_INITIALIZER;
|
||||
static int g_term = 0;
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_printf(char *format, ...)
|
||||
{
|
||||
va_list ap;
|
||||
|
||||
va_start(ap, format);
|
||||
vfprintf(stdout, format, ap);
|
||||
va_end(ap);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
/* produce a hex dump */
|
||||
void g_hexdump(char* p, int len)
|
||||
{
|
||||
unsigned char* line;
|
||||
int i;
|
||||
int thisline;
|
||||
int offset;
|
||||
|
||||
line = (unsigned char*)p;
|
||||
offset = 0;
|
||||
while (offset < len)
|
||||
{
|
||||
printf("%04x ", offset);
|
||||
thisline = len - offset;
|
||||
if (thisline > 16)
|
||||
thisline = 16;
|
||||
for (i = 0; i < thisline; i++)
|
||||
printf("%02x ", line[i]);
|
||||
for (; i < 16; i++)
|
||||
printf(" ");
|
||||
for (i = 0; i < thisline; i++)
|
||||
printf("%c", (line[i] >= 0x20 && line[i] < 0x7f) ? line[i] : '.');
|
||||
printf("\n");
|
||||
offset += thisline;
|
||||
line += thisline;
|
||||
}
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void* g_malloc(int size, int zero)
|
||||
{
|
||||
void* rv;
|
||||
|
||||
rv = malloc(size);
|
||||
if (zero)
|
||||
memset(rv, 0, size);
|
||||
return rv;
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_free(void* ptr)
|
||||
{
|
||||
if (ptr != 0)
|
||||
free(ptr);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_memset(void* ptr, int val, int size)
|
||||
{
|
||||
memset(ptr, val, size);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_memcpy(void* d_ptr, const void* s_ptr, int size)
|
||||
{
|
||||
memcpy(d_ptr, s_ptr, size);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_getchar(void)
|
||||
{
|
||||
return getchar();
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_tcp_socket(void)
|
||||
{
|
||||
return socket(PF_INET, SOCK_STREAM, 0);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_tcp_close(int sck)
|
||||
{
|
||||
close(sck);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_tcp_set_non_blocking(int sck)
|
||||
{
|
||||
int i;
|
||||
|
||||
i = fcntl(sck, F_GETFL);
|
||||
i = i | O_NONBLOCK;
|
||||
fcntl(sck, F_SETFL, i);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_tcp_bind(int sck, char* port)
|
||||
{
|
||||
struct sockaddr_in s;
|
||||
|
||||
memset(&s, 0, sizeof(struct sockaddr_in));
|
||||
s.sin_family = AF_INET;
|
||||
s.sin_port = htons(atoi(port));
|
||||
s.sin_addr.s_addr = INADDR_ANY;
|
||||
return bind(sck, (struct sockaddr*)&s, sizeof(struct sockaddr_in));
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_tcp_listen(int sck)
|
||||
{
|
||||
return listen(sck, 2);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_tcp_accept(int sck)
|
||||
{
|
||||
struct sockaddr_in s;
|
||||
int i;
|
||||
|
||||
i = sizeof(struct sockaddr_in);
|
||||
memset(&s, 0, i);
|
||||
return accept(sck, (struct sockaddr*)&s, (socklen_t*)&i);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_tcp_recv(int sck, void* ptr, int len, int flags)
|
||||
{
|
||||
return recv(sck, ptr, len, flags);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_tcp_send(int sck, void* ptr, int len, int flags)
|
||||
{
|
||||
return send(sck, ptr, len, flags);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_tcp_last_error_would_block(int sck)
|
||||
{
|
||||
return errno == EWOULDBLOCK;
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_tcp_select(int sck)
|
||||
{
|
||||
fd_set rfds;
|
||||
|
||||
FD_ZERO(&rfds);
|
||||
FD_SET(sck, &rfds);
|
||||
return select(sck + 1, &rfds, 0, 0, 0);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_is_term(void)
|
||||
{
|
||||
int rv;
|
||||
|
||||
pthread_mutex_lock(&g_term_mutex);
|
||||
rv = g_term;
|
||||
pthread_mutex_unlock(&g_term_mutex);
|
||||
return rv;
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_set_term(int in_val)
|
||||
{
|
||||
pthread_mutex_lock(&g_term_mutex);
|
||||
g_term = in_val;
|
||||
pthread_mutex_unlock(&g_term_mutex);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_sleep(int msecs)
|
||||
{
|
||||
usleep(msecs * 1000);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_thread_create(void* (*start_routine)(void*), void* arg)
|
||||
{
|
||||
pthread_t thread;
|
||||
|
||||
return pthread_create(&thread, 0, start_routine, arg);
|
||||
}
|
||||
|
||||
/* rc4 stuff */
|
||||
|
||||
/*****************************************************************************/
|
||||
void* g_rc4_info_create(void)
|
||||
{
|
||||
return g_malloc(sizeof(RC4_KEY), 1);;
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_rc4_info_delete(void* rc4_info)
|
||||
{
|
||||
g_free(rc4_info);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_rc4_set_key(void* rc4_info, char* key, int len)
|
||||
{
|
||||
RC4_set_key((RC4_KEY*)rc4_info, len, (unsigned char*)key);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_rc4_crypt(void* rc4_info, char* data, int len)
|
||||
{
|
||||
RC4((RC4_KEY*)rc4_info, len, (unsigned char*)data, (unsigned char*)data);
|
||||
}
|
||||
|
||||
/* sha1 stuff */
|
||||
|
||||
/*****************************************************************************/
|
||||
void* g_sha1_info_create(void)
|
||||
{
|
||||
return g_malloc(sizeof(SHA_CTX), 1);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_sha1_info_delete(void* sha1_info)
|
||||
{
|
||||
g_free(sha1_info);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_sha1_clear(void* sha1_info)
|
||||
{
|
||||
SHA1_Init((SHA_CTX*)sha1_info);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_sha1_transform(void* sha1_info, char* data, int len)
|
||||
{
|
||||
SHA1_Update((SHA_CTX*)sha1_info, data, len);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_sha1_complete(void* sha1_info, char* data)
|
||||
{
|
||||
SHA1_Final((unsigned char*)data, (SHA_CTX*)sha1_info);
|
||||
}
|
||||
|
||||
/* md5 stuff */
|
||||
|
||||
/*****************************************************************************/
|
||||
void* g_md5_info_create(void)
|
||||
{
|
||||
return g_malloc(sizeof(MD5_CTX), 1);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_md5_info_delete(void* md5_info)
|
||||
{
|
||||
g_free(md5_info);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_md5_clear(void* md5_info)
|
||||
{
|
||||
MD5_Init((MD5_CTX*)md5_info);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_md5_transform(void* md5_info, char* data, int len)
|
||||
{
|
||||
MD5_Update((MD5_CTX*)md5_info, data, len);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_md5_complete(void* md5_info, char* data)
|
||||
{
|
||||
MD5_Final((unsigned char*)data, (MD5_CTX*)md5_info);
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
int g_mod_exp(char* out, char* in, char* mod, char* exp)
|
||||
{
|
||||
BN_CTX* ctx;
|
||||
BIGNUM lmod;
|
||||
BIGNUM lexp;
|
||||
BIGNUM lin;
|
||||
BIGNUM lout;
|
||||
int rv;
|
||||
|
||||
ctx = BN_CTX_new();
|
||||
BN_init(&lmod);
|
||||
BN_init(&lexp);
|
||||
BN_init(&lin);
|
||||
BN_init(&lout);
|
||||
BN_bin2bn((unsigned char*)mod, 64, &lmod);
|
||||
BN_bin2bn((unsigned char*)exp, 64, &lexp);
|
||||
BN_bin2bn((unsigned char*)in, 64, &lin);
|
||||
BN_mod_exp(&lout, &lin, &lexp, &lmod, ctx);
|
||||
rv = BN_bn2bin(&lout, (unsigned char*)out);
|
||||
BN_free(&lin);
|
||||
BN_free(&lout);
|
||||
BN_free(&lexp);
|
||||
BN_free(&lmod);
|
||||
BN_CTX_free(ctx);
|
||||
return rv;
|
||||
}
|
||||
|
||||
/*****************************************************************************/
|
||||
void g_random(char* data, int len)
|
||||
{
|
||||
int fd;
|
||||
|
||||
memset(data, 0x44, len);
|
||||
fd = open("/dev/urandom", O_RDONLY);
|
||||
if (fd == -1)
|
||||
fd = open("/dev/random", O_RDONLY);
|
||||
if (fd != -1)
|
||||
{
|
||||
read(fd, data, len);
|
||||
close(fd);
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue